The suitability of color laser marking technology for industry

Abstract

In this thesis work, the technology of color laser marking of metals is considered from the point of view of its introduction into industry. The use of color images as a marking can provide not only product identification, but also attracts the attention of the consumers, and can also serve as an additional means of protecting products against counterfeiting. However, for industrial use it is necessary to standardize this technology and prove its compliance with the requirements of production. Thus, the goal is to test the technology of color laser marking for repeatability and resistance to various external influences.Therefore, a color palette for AISI 304 stainless steel consisting of fifteen colors was developed. The resulting colors were examined by optical, SEM and AFM, and the composition of oxide filmswas determined by Raman scattering spectroscopy. The standardization of colors and the repeatability of the palette were carried out by measuring and analyzing the reflectance spectra of the samples in accordance with the recommendation of the International Commission on Illumination. The stability of marking to the effect of various environmental conditions, mechanical and chemical effects is shown. Thus, possible limitations and recommendations for the introduction of technology in the industry were formulated.